Tannenbusch

Tannenbusch Dunes is a nature reserve located in the Tannenbusch section of Bonn. The nature reserve consists of inland dunes and measures 6.7ha. The dunes appeared after the last ice age, approximately 10,000 years ago. Because the region had no vegetation at that time, the sand was blown into this area from an old river bed of the Rhine. The dunes are the remains of a former wider open sand area that is nowadays mostly covered by a residential zone. The body of the dunes is clearly visible because it sticks 2 – 3 meters out of the surroundings. The sandy soil distinguishes itself by being dry, porous, and poor in nutritions and number of specific plants, such as the grey hair-grass and other endangered species are adapted to these extreme soil conditions. To preserve the specific biotope of the area fertilizing substances are not used in the maintenance of the soil. Next to the plants, the dunes also provide a viable habitat for rare animals. The sunny and dry spots are of special importance to particular insect types such as grasshoppers, wild bees and wasps.

The Max Planck Institute for Radio Astronomy (MPIfRA) (German: Max-Planck-Institut für Radioastronomie) is located in Bonn, Germany. It is one of 80 institutes in the Max Planck Society (German: Max-Planck-Gesellschaft). 50°43′47.6″N 7°4′9.2″E

The Graurheindorfer Burg (also Burg Graurheindorf or Rheindorfer Burg) is a Schloss located in the Graurheindorf district of Bonn

Endenich (Kölsch: Endenesch) is a neighborhood in the western part of Bonn, Germany. Before 1904 it was an independent municipality. The village of Endenich was founded in the 8th century, and was first mentioned in 804 as Antiniche. Today, about 12,000 people live in Endenich.

Endenicher Bach ("stream of Endenich") is a river of North Rhine-Westphalia, Germany. The Endenicher Bach is called Katzenlochbach at its origin but goes through some name changes on its way to a confluence with the Hardtbach (commonly known as the Dransdorfer Bach), which later flows into the river Rhine. It first changes into Endenicher Bach and later into Lengsdorfer Bach. With a length of 11 kilometres (6.8 mi), it's the longest stream in Bonn.

The Sieg is a river in North Rhine-Westphalia and Rhineland-Palatinate, Germany. It is a right tributary of the Rhine. The river is named after the Sicambri. It is 155 kilometres (96 mi) in length. The source is located in the Rothaargebirge mountains. From here the river runs southwestwards to the city of Siegen and the hills of Siegerland, both named after the river. Further west the Sieg valley forms the boundary of the Bergisches Land (northern) and Westerwald (southern). The river finally runs through a protected area east of the city of Bonn. After passing the cities of Hennef and Siegburg, the river flows into the Rhine at the Naturschutzgebiet Siegaue, a protected area immediately to the northeast of the city of Bonn, near Niederkassel/Mondorf.

Hardtbach (also: Rheindorfer Bach, Dransdorfer Bach, Alte Bach) is a river of North Rhine-Westphalia, Germany. It is a left tributary of the Rhine near Bonn.

The August-Macke-Haus or August Macke House is a museum in Bonn, Germany, opened in 1991, dedicated to the expressionist painter August Macke. It is located in Macke's former home, where he lived from 1911 to 1914. The museum displays reconstructed interiors and houses temporary exhibitions, usually focusing on Expressionism. In the August-Macke-Haus, Macke's studio has been restored, including furniture from his Tegernsee days. A basic archive of Rhenish Expressionism is available in addition to a reference library.

The Heilsbach is a river of North Rhine-Westphalia, Germany. It flows into the Hardtbach in Bonn-Lessenich.

The Hausdorff Center for Mathematics (HCM) is a research center in Bonn, formed by the four mathematical institutes of the Rheinische Friedrich-Wilhelms-Universität Bonn (Mathematical Institute, Institute for Applied Mathematics, Institute for Numerical Simulation, Research Institute for Discrete Mathematics), the Max Planck Institute for Mathematics (MPIM), and the Institute for Social and Economic Sciences.

The Kemper Werth (also known as auf dem Schänzchen and historically as the Pfaffenmütze) is a promontory in the Rhine at the mouth of the River Sieg, in the northeast of Bonn, in Germany. Formerly a pair of islands, it became attached to the river bank as a result of engineering work altering the confluence of the Sieg. It was the site of a fort during the Eighty Years' War and is now part of a protected natural area, the Naturschutzgebiet Siegaue.

Hardtberg is a borough (Stadtbezirk) of Bonn, Germany. It has a population of 34,576 (2018).